A wide variety of heating and cooling applications use heat exchangers. The increase in energy prices, the requirement for size reduction, restriction on greenhouse gas emissions has led to need finding ways develop efficient cost-efficient way enhance model a exchanger by visualizing effects design parameters is using Computational Fluid Dynamics (CFD). reason this exploration was lead an exam...

Abstract A heat exchanger is an important component where high-temperature hot air and normal-temperature water exchange heat. The area of the finned tube calculated by rated working conditions. However, with decrease storage temperature, temperature at outlet thermodynamic energy device changes in a large range, directly affecting capacity efficiency exchanger. This paper’s three-dimensional m...

This work describes an improved design for a nuclear fuel rod, which was developed using an experimental circuit that simulates the nuclear rod environment in a pressurized water reactor (PWR). The heat exchanger circuit runs atmospheric to high-pressure boiling water through an annular finned tube (153 fins), which is used to enhance confined heat transfer rates and guide the nucleate boiling ...

This paper presents a study of the air flow distribution through a residential air-conditioning heat exchanger. The test subject was a finned-tube, A-shaped coil outfitted with a condensation collection pan required for horizontal installation. We examined the air flow distribution approaching and exiting the coil at the rated and a reduced air flow rate, and at two humidity levels. Our measure...

An experimental investigation was implemented to determine the capacity degradation due to non-uniform refrigerant and air flow distributions, and to assess the potential to recover the lost capacity via controlling refrigerant distribution between individual refrigerant circuits. The tests were performed on a three-circuit, threedepth-row, finned-tube evaporator. Refrigerant inlet quality, exi...

Background and Introduction In 2003 ETD held a successful International Conference and Workshop on HRSG Technology at which the importance of repair and maintenance technologies was recognised as a major factor in the successful and economic plant operation. As a relatively new, and rapidly evolving, technology HRSGs have had a history of faults, particularly in early models, which were not des...